import java.util.Arrays;
import java.util.Comparator;

class Student{
    public String name;
    public int age;
    public Student(String name, int age) {
        this.name = name;
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}
class AgeComper implements Comparator<Student>{

    @Override
    public int compare(Student o1, Student o2) {
        return o1.age-o2.age;
    }
}
class NameCompare implements Comparator<Student>{

    @Override
    public int compare(Student o1, Student o2) {
        return o1.name.compareTo(o2.name);
    }
}
public class Test {


    public static void main(String[] args) {
        AgeComper ageComper=new AgeComper();
       /* Student student1=new Student("zhansan",14);
        Student student2=new Student("lisi",16);*/
      //  System.out.println(ageComper.compare(student1, student2));
        NameCompare nameCompare=new NameCompare();
        //System.out.println(nameCompare.compare(student1, student2));
        Student[] students=new Student[3];
        students[0]=new Student("zhansan",14);
        students[1]=new Student("lisi",12);
        students[2]=new Student("wangwu",22);
         // Arrays.sort(students,ageComper);
        //System.out.println(Arrays.toString(students));
        System.out.println(Arrays.toString(students));
}
}
